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Finding the Fourth Proportional to 485,903.76, 669,639.18 and 349,701.24

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Solution

The fourth proportional to 485,903.76, 669,639.18 and 349,701.24 is: 481,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,903.76 : 669,639.18 = 349,701.24 : x
  2. Step 2: Convert to fraction form
    485,903.76/669,639.18 = 349,701.24/x
  3. Step 3: Cross multiply
    485,903.76x = 669,639.18 × 349,701.24
  4. Step 4: Simplify right side
    485,903.76x = 234,173,651,598.58
  5. Step 5: Solve for x
    x = 234,173,651,598.58/485,903.76
  6. Step 6: Final answer
    x = 481,934.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.